Auxiliary heater for steam boilers



Nov. 14, 1933. G, M. coNEKlN AUXILIARY HEATER FOR STEAM BOILERS FiledAug. 25, 1931 3 Sheets-Sheet l rll. l

Nov. 14, 1933. G. M. com-:KIN

AUXILIARY HEATER FOR STEAM BOILERS Filed Aug. 25, 1931 3 Sheets-Sheet 2Nov. 14, 1933. G. M. com-:KIN 1,935,142

AUXILIARY HEATER FOR STEAM BOILERS Filed Aug. 25, 1931 I5 Sheets-Sheet 3Patented Nov. 14, 1933` Unirse l STATES rear'A oFFIcE '1,935,142AUXILIARY HEATER FoasTEAM normas. g

George' Morris Conekin, Philadelphia, Pa.-Y Application August 25, 1931.serialfNo...559,s34 s claims. (o1. zeig-e7),

which such a heating system must at times re-A spond.

In steam heating systems having the usual steam boiler and furnacetherefor and wherein there vare a considerable number of radiators whichare connected to a relatively long.` supply pipeline or section forreceiving steam from the boiler and wherein there are a lesser number ofradiators connected to a relatively short supply pipe line orsection forreceiving steam from the boiler experience has developed the fact thatfrequently the heating effect of radiators supplied through the longpipe line-and particularly of the radiators more remote from the boileras for example the radiators inthe upperpart of a building-is relativelysmall `or deficient due to insufiiciency in the supply of steam theretoand any object of the present invention is to employ an auxiliary heaterand to incorporate it inthe heating system in such a manner that it isfunctionally associated with the water and steam section of the boiler,with the furnace for the boiler,

and with the long supply pipe line or section so that the steam supplyto the long pipe line will be augmented and insured whereby the heatingeffect of each of the several radiators connected to the long supplypipe line or section will favor ably compare with the heating effect ofeach of the radiators connectedto the short supply pipe line or section.

A further object of the invention is to provide l an auxiliary heater ofthis character adapted/to utilize the heat ofthe smoke andvhot gases andother products of combustion which pass off to the chimney or nue andvthe heat of which is usually lost aftersuch products of combustion leavethe steam boiler of the heating system.

yA further object of the present invention isto provide an auxiliaryheaterj adapted to permit steam to enter the line to be reinforced andat the same time permit any water of condensation to drain back into thesteam boiler.

With; these and other objects in view, the invention consists in theconstruction 'and novel combination and arrangement of parts hereinafterdescribed, illustrated in the accompanying drawings, and set forth inthe claims hereto ap pended, it being understood that various changes inthe form, proportion, and minor details of construction, within thescope of the claims, may be resorted to without departing from thespirit of the invention or sacricingl any of the advantagesI thereof.

-` In the drawings: v

Figure l is a side elevation of an auxiliary heater constructed inaccordancewith this. in-

vention and shown applied to a steam heating Fig. 2 is a verticalsectional viewtak'ensubstam tially on the line v2 2 of Fig. 1, the steamboiler `being shown in elevation.

FigfS is a diagrammatic view illustrating the hook up of the severalmembers or parts of a AY'-'steam heating system realizing the invention.

In-this figure, the! casing construction for the auxiliary heaterthereof .is shown witha portion of the casing construction removedwhereby the auxiliary heater. or auxiliary heater element appears infull lines. For the purpose of better illustrating the invention theparts in this figure are shown in the samehook up as in the otherfigures but in this Fig. 3 the parts occupy a somewhat diiferentphysical position relative to each other from that shown in the otherfigures.

`In the accompanying drawings, in which is illustrated the preferredembodiment of the invention, 1 designates a steam boiler and furnaceconstruction provided at the top with riser'pipes 2 and 3 leading fromthe usual steam and water space of `the boiler and with 'a smoke pipe orue extending'from the furnace Asection of the boiler and furnaceconstruction to the chimney -provided therefor. f-The smoke pipe or fluecomy prises 'as a. part thereof a drum or casing 5 wherein Athere isencased an auxiliary heater,

or auxiliary heating element vor section,l 6. @The auxiliary heater 6isof radiator formation, and while one section or unit is illustrated inthe accompanying drawings,v the auxiliary heater may comprise any numberof such sections, as will be readily understood. The pipe connectionsofthe smoke pipe may connect the drum or casing 5v with the steamboiler-1 and with the chimney or ue, so that when the smoke, hot gasesand vother products of combustion, which usually pass from the steamboiler through thel chimney or flue, pass into the smoke pipe, they areforced to pass through the drum or casing 5 and impinge against theauxiliary heater. Owing to the auxiliary heater being of radiatorformation, the smoke and other products of combustion pass through andaround the auxiliary heater, so that the latteris entirely subjected tothe action kofthe heat of the smoke and other products of combustion.

The riser pipes 2 and 3 are respectively con-v lreference to theeiciency of the other short line, 8. The long and short lines 'l and 8are shown in the accompanying drawings as extending substantiallyhorizontally from the riser pipes 2 and 3-but as is well recognized inpractice these should slightly incline downwardly towards the riserpipes 2 and 3 to permit drainage back towards the riser pipes 2 andB-and said lines '7 and 8 are connected with drain pipes 9 and 10,whichconduct any water of condensation in the lines 7 and 8 back to thesteamf boiler to prevent such water of condensation from interferingwith the passage of the steam through the lines. The drain pipes 9 and10 .are vertical and the auxiliary heater' 6 is connected at the top atone end by a pipe 11 with the drain pipe,'by a T coupling 11e. at apoint above the water line of the steam boiler l. The pipe 11 ispreferably located above the top of the steam boiler, and it ispreferably provided with a thermometer 12. Steam from the auxiliaryheater will pass out from the top of the heater through the pipe 11 tothe upper portion of the drain pipe 9, and will then pass upwardlythrough the drain pipe and enter the relatively long line 7 and increasethe heating eiiiciency of the same. By means of the auxiliary heatersteam of a relatively high temperature is introduced into the pipe line7 to supplement the steam which passes directly from the boiler into theline through the riser 2.

The auxiliary heater is supplied with water by the return pipe 13 fromthe radiators, and the water of condensation from the radiators thussupplied to the auxiliary heater is then heated, and that portionthereof which is converted into steam and delivered to the pipe line 7ows from the auxiliary heater through the pipe 11 and down the drainypipe 9 to the lower portion of the steam boiler, viz. to the vWaterspace of the steam boiler, and is delivered to the latter in a heatedcondition, ,thereby increasing the efficiency of the steam boiler byintroducing preheated water into the same instead of water at arelatively low temperature, as is the case where the return pipe isconnected directly with the steam boiler and the water of condensationnot preheated before being delivered to the steam boiler.

The return pipe rextends to a point below one end of the auxiliaryheater and is connected with the same by a vertical pipe 14 at the lowercorner of the auxiliaryheater at apoint diagonally op.- posite theoutlet 15 witlrwhich the pipe 11 is connected. The auxiliary heater isprovided at the other end with a cap 16 for closing the outlet 17 whenthe latter is `not employed. The return pipe 14 and the discharge pipel1 are connected with the auxiliary radiator by suitable couplings, andthe said auxiliary heater is supported by spaced vertical standards 18and 19 which are provided at their lower ends with anged caps 20 and 21suitably secured to the oor or other support upon which the steam boileris mounted. The vertical standards 18 and 19 preferably consist of pipeswhich are suitably plugged. The standard 18 is relatively short and iscoupled to the lower end of the vertical return pipe 14 at the pointwhere the same is connected with the radiator return pipe 13. Thestandard 19 is suitably coupled at the other side of the auxiliaryheater opposite to the point where the return pipe ld-is connected, andthe spaced vertical supports provide a strong, durable structure for theauxiliary heater. The auxiliary heater is preferably arranged close tothe steam boiler, as clearly illustrated in Fig. 1 of the drawings, tosubject it to the intense heat of the products of combustion passingfrom the steam boiler to the, chimney or flue, but this auxiliary heaterdoes not affect the construction of the boiler, being arranged in thesmoke pipe thereof. pipe connection extending from the casing or drum 5'may be provided not only at the upper but at the lower portion thereof,and the relatively long pipe line extending from the riser 2 ispreferably connected to the said drum so as to thoroughly subject it tothe heat of the products of combustion passing through the smoke pipe.

What is claimed is:

1. In a steam heating system, in combination, a steam boiler havingriser pipes extending upwardly from the top thereof, a long pipe linehaving a substantially horizontal section connected to one of the riserpipes, a short pipe line having a substantially horizontal sectionconnected to another of Vthe riser pipes, radiators, some of whichradiators are connected to and supplied with steam from the long pipeline and others of which radiators are connected to and supplied withsteam from the short pipe line, vertical drain pipes, there being adrain pipe for and corresponding to each of said pipe lines, each ofsaid drain pipesv being arranged adjacent the steam boiler and extendingfrom a horizontal section of the pipe line to which it corresponds tothe lower portion of the boiler for delivering waters of condensationdraining therethrough back into the water-containing section of theboiler, a smoke conduit extending from the combustion space of the steamboiler, a drum or casing provided in or by said smoke conduit, anauxiliaryheater arranged within the drum or casing in the path of thesmoke and other products or" combustion passing through the smokeconduit,` a discharge pipe leading from the upper or steam deliveryportion of the auxiliary heater and extending to and communicating withthe drain pipe of the relatively long pipe line, said discharge pipebeing connected to said last'mentioned drain pipe at a point whichV isabove the water line of the boiler, and a radiator return pipe forconnecting the several radiators to the auxiliary heater at the lowerportion or water intake end thereof.

2. A steam heating system asderlned in and by the preceding claim,wherein the return pipe for the radiators is connected to the auxiliaryheater through the medium of a vertical pipe located below theVauxiliary heater so as to deliver return water upwardly into the bottomportion of the heater and at a point directly opposite the place wherethe steam and any water leaving the auxiliary heater pass upwardlytherefrom through the discharge pipe that is connected to the drain pipeconnecting the long pipe line and the lower portion of the boiler andwherein the auxiliary heater is supported on vertical standards, one ofwhich standards serves as said vertical pipe leading into the auxiliaryheater.

GEORGE MORRIS CONEKIN.

The short y

